Short Answer Type Questions (Click to View Answers)
1. Water is heated from 0°C to 10°C. How does the density of water change with temperature?
Ans: On heating from 0°C, the density of water increases up to 4°C and then decreases beyond 4°C.
2. What do you understand by the term relative density of a substance?
Ans: Relative density is the ratio of the density of a substance to the density of water at 4°C.
3. Define relative density as a ratio of mass?
Ans: Relative density = Mass of substance / Mass of equal volume of water.
4. Differentiate between density and relative density of a substance.
Ans: Density is mass per unit volume (kg/m³), while relative density is a ratio and has no units.
